scholarly journals APPLICATION AND PERSPECTIVES OF MULTIPHASE INDUCTION MOTORS / DAUGIAFAZIŲ VARIKLIŲ NAUDOJIMO SRITYS IR PERSPEKTYVOS

2012 ◽  
Vol 4 (1) ◽  
pp. 67-70
Author(s):  
Benas Kundrotas
Keyword(s):  
Differential Equations ◽  
Induction Motor ◽  
Reference Frame ◽  
Induction Motors ◽  
Matrix Form ◽  
Matlab Software ◽  
Transient Characteristics ◽  
Synchronous Reference Frame ◽  
Three Phase

The article considers the areas of applying multiphase induction motors. Their advantages against three phase motors have become the main reason for employing them in multiphase drives. The paper deals with the six-phase induction motor having two similar three phase windings in the stator shifted by 30 degrees in space and three phase windings in the rotor. Differential equations for this motor are presented and transformed to dq synchronous reference frame. The transformed equations are expressed in a matrix form and solved by MATLAB software using the Dormand-Prince (ode45) method. The transient characteristics of the torque, speed and current of the six-phase induction motor are calculated and discussed. Santrauka Nagrinėjamos daugiafazių variklių naudojimo sritys, pabrėžiami pagrindiniai jų privalumai lyginant su trifaziais varikliais. Nurodomos daugiafazių variklių teigiamos savybės, lemiančios jų naudojimą šiuolaikinėse elektros pavarose. Nagrinėjamas šešiafazis asinchroninis variklis. Jo statoriuje yra dvi vienodos trifazės apvijos, kurių magnetinės ašys skiriasi 30 erdvinių laipsnių kampu, o rotoriuje yra trifazė apvija. Pateikiamos tokio variklio dinamikos lygtys, transformuotos į dq sinchroniškai besisukančią koordinačių sistemą. Transformuotos lygtys užrašomos matricos pavidalu ir sprendžiamos MATLAB programiniu paketu taikant Dormand-Prince (ode45) metodą. Gautos ir ištirtos šešiafazio asinchroninio variklio greičio, momento ir srovių dinaminės charakteristikos.

Model of Multiphase Induction Motor

1970 ◽  
Vol 111 (5) ◽  
pp. 111-114 ◽  
Author(s):  
B. Kundrotas ◽  
S. Lisauskas ◽  
R. Rinkeviciene
Keyword(s):  
Differential Equations ◽  
Induction Motor ◽  
Reference Frame ◽  
Matrix Form ◽  
Equivalent Circuits ◽  
Matlab Software ◽  
Transient Characteristics ◽  
Synchronous Reference Frame ◽  
Three Phase ◽  
Dynamic Equivalent

The six-phase induction motor with two similar stator three phase windings, shifted by 30 degrees in space and three phase winding in rotor is considered. Differential equations of this motor are presented and transformed to dq synchronous reference frame. Dynamic equivalent circuits for each component are presented. Transformed equations are expressed in matrix form and are solved by MATLAB software using Dormand-Prince (ode45) method. Transient characteristics of torque, speed and current of six-phase induction motor are calculated and discussed. Ill. 6, bibl. 12, tabl. 1 (in English; abstracts in English and Lithuanian).http://dx.doi.org/10.5755/j01.eee.111.5.369

scholarly journals Windings Design for Single-phase Induction Motors Base on 4-phase Induction Motor (Case study: identical windings design)

2018 ◽  
Vol 215 ◽  
pp. 01023 ◽  
Author(s):  
Zuriman Anthony ◽  
Erhaneli Erhaneli ◽  
Zulkarnaini Zulkarnaini
Keyword(s):  
Induction Motor ◽  
Power Factor ◽  
Single Phase ◽  
Induction Motors ◽  
Three Phase ◽  
Motor Design

A 1-phase induction motor usually has a complicated windings design which compares to polyphase induction motor. In addition, a large capacitor start is required to operate the motor. It is an expensive way to operate the motor if it compare to polyphase induction motor. So, a new innovation method is required to make the motor more simple and cheaper. This research is purposed to study a new winding design for a single-phase capacitor motor. Winding design of the motor was conducted to a simple winding design like a 4-phase induction motor that has four identical windings. The comparator motor that use in this study was a Three-phase induction motor with data 1400 RPM, 1.5 HP, 50Hz, 380/220V, Y/Δ, 2.74/4.7A, 4 poles, that had the same current rating which the proposed method. The result showed that the motor design on this proposed method could be operated at 88.18 % power rating with power factor close to unity.

scholarly journals Experimental Study of Various Parameters during Speed Control of Three-phase Induction Motor Using GPIC and LabVIEW

2021 ◽  
Vol 5 (1) ◽  
pp. 51-62
Author(s):  
Adnan Ahmed ◽  
Abdul Majeed Shaikh ◽  
Muhammad Fawad Shaikh ◽  
Shoaib Ahmed Shaikh ◽  
Jahangir Badar Soomro
Keyword(s):  
Induction Motor ◽  
Induction Motors ◽  
Induction Machine ◽  
Speed Control ◽  
Industrial Applications ◽  
General Purpose ◽  
Three Phase ◽  
Field Programmable ◽  
Input Source ◽  
Open Control

Induction motors are widely used from home to industrial applications. Speed of induction motor plays important role, so to control the speed of induction motor various techniques are adopted and one of these techniques is V/F control, which is adopted in this paper. This technique helps to control the speed in open control system in RPM. Moreover, Control is designed in LabVIEW, it is quite helpful to develop the circuit graphically and code is automatically written in the background to run on Field Programmable Gate Array (FPGA). The aim of this research is to study the impacts on diverse parameters during speed control of three phase induction machine with manipulation of GPIC. Solar technology is used as input source to drive the General-Purpose Inverter Controller (GPIC). Apart of this, impacts of modulation index and carrier frequency influencing the active, reactive and apparent power, temperature and power quality and current overshoot is analysed. MATLAB/Simulink and LabVIEW tools are used for simulation and results along with GPIC, Induction motor and solar panel as hardware.

scholarly journals Improvement of DSOGI PLL Synchronization Algorithm with Filter on Three-Phase Grid-connected Photovoltaic System

2018 ◽  
Vol 18 (1) ◽  
pp. 35 ◽  
Author(s):  
Rofiatul Izah ◽  
Subiyanto Subiyanto ◽  
Dhidik Prastiyanto
Keyword(s):  
Reference Frame ◽  
Frequency Estimation ◽  
Photovoltaic System ◽  
Positive Sequence ◽  
Pv System ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Synchronous Reference Frame ◽  
Three Phase ◽  
Low Pass

Synchronous Reference Frame Phase Locked Loop (SRF PLL) has been widely used for synchronization three-phase grid-connected photovoltaic (PV) system. On the grid fault, SRF PLL distorted by negative sequence component and grid harmonic that caused an error in estimating parameter because of ripple and oscillation. This work combined SRF PLL with Dual Second Order Generalized Integrator (DSOGI) and filter to minimize ripple and minimize oscillation in the phase estimation and frequency estimation. DSOGI was used for filtering and obtaining the 90o shifted versions from the vαβ signals. These signals (vαβ) were generated from three phase grid voltage signal using Clarke transform. The vαβ signal was the inputs to the positive-sequence calculator (PSC). The positive-sequence vαβ was transformed to the dq synchronous reference frame and became an input to SRF-PLL to create the estimation frequency. This estimation frequency from SRF PLL was filtered by the low-pass filter to decrease grid harmonic. Moreover, the output of low-pass filter was a frequency adaptive. The performance of DSOGI PLL with filter is compared with DSOGI PLL, SRF PLL, and IEEE standard 1547(TM)-2003. The improvement of DSOGI PLL with filter gave better performances than DSOGI PLL and SRF PLLbecause it minimized ripples and oscillations in the phase and frequency estimations.

Model of Vector Controlled Induction Drive

2009 ◽  
Vol 147-149 ◽  
pp. 149-154
Author(s):  
Roma Rinkeviciene ◽  
Andrius Petrovas
Keyword(s):  
Induction Motor ◽  
Reference Frame ◽  
Real Variable ◽  
Flux Linkage ◽  
Current Channel ◽  
Stator Current ◽  
Synchronous Reference Frame ◽  
Rotor Flux ◽  
Drive Model ◽  
Motor Model

The paper presents the model of vector controlled induction motor. Induction motor model is carried out in reference frame, fixed on stator. Elaborated model of the drive is suitable for investigation dynamics because output signals appear as real currents, flux linkages and other variables. Vector control law model is implemented for variables in synchronous reference frame; therefore controller operates with transformed variables. Structure of designed model reflects the real variable speed drive. Model of vector controlled induction drive comprise model of induction motor, feedback signals and blocks as well as speed and flux reference blocks and controllers for producing motor supply signals. Feedback blocks are used for calculation stator current vector in the rotor flux linkage reference frame. For flux and speed control are designed lag controllers. Between advantages of that model is additional simulation of current channel law.

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